Elevating Mechanism Support Layout for Protrusion Moment Loads
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Solution Overview
Problem
Existing elevating devices face challenges in supporting moments acting on the protruding-retreating mechanism without increasing the overall size, necessitating high support rigidity and larger structures.
Innovation Solution
The elevating device incorporates a second support section separate from the first support section to support the protruding-retreating mechanism, allowing it to manage moments acting on the mechanism even with low first support section rigidity, thereby preventing an increase in device size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the support rigidity of the first support section is increased to support the moment acting on the protruding-retreating mechanism, then the moment support capability is improved, but the device size increases
Solution Approach 1:
The support function is divided into two independent support sections: the first support section (part of the elevating mechanism) and the second support section (separate support structure). The first support section provides basic support while the second support section specifically counters the moment acting on the protruding-retreating mechanism. This segmentation allows each section to be optimized independently, preventing the need to increase the size of the entire device to handle moment loads.
Solution Approach 2:
The second support section acts as an intermediary structure that specifically addresses the moment support requirement without requiring the first support section (elevating mechanism) to be oversized. By introducing this intermediate support element, the system can maintain a compact elevating mechanism while still achieving the necessary moment support capability through the combined action of both support sections.
2Strength
If the support span in the protruding-retreating direction is increased to support the moment, then the moment support capability is improved, but the device size increases
Solution Approach 1:
The support function is divided into two independent support sections: the first support section (part of the elevating mechanism) and the second support section (separate support structure). The first support section provides basic support while the second support section specifically counters the moment acting on the protruding-retreating mechanism. This segmentation allows each section to be optimized independently, preventing the need to increase the size of the entire device to handle moment loads.
3Strength
If the rigidity of each part is increased to support the moment, then the moment support capability is improved, but the device size increases
Solution Approach 1:
The support function is divided into two independent support sections: the first support section (part of the elevating mechanism) and the second support section (separate support structure). The first support section provides basic support while the second support section specifically counters the moment acting on the protruding-retreating mechanism. This segmentation allows each section to be optimized independently, preventing the need to increase the size of the entire device to handle moment loads.
Solution Approach 2:
Instead of increasing the rigidity of all parts uniformly, the second support section is specifically designed to provide the necessary rigidity and moment support capability at the critical location where the moment acts on the protruding-retreating mechanism. This localized approach to rigidity enhancement allows the rest of the device to remain compact while still achieving the required moment support performance.
Data Source
AI summary
An elevating device includes: a mount section on which an article is placeable; a protruding-retreating mechanism supporting the mount section and configured to cause the mount section to protrude and retreat in a protruding-retreating direction extending in a horizontal direction; an elevating mechanism supporting the protruding-retreating mechanism and configured to raise and lower the protruding-retreating mechanism; and a base supporting the elevating mechanism, wherein the elevating mechanism includes a first support section being an area supporting the protruding-retreating mechanism, the elevating device further includes a second support section being separate from the first support section and supporting the protruding-retreating mechanism, and the second support section is configured to (i) allow the elevating mechanism to raise and lower the protruding-retreating mechanism, and (ii) support a moment that acts on the protruding-retreating mechanism with the first support section serving as a fulcrum.